<?php if (!defined('ABSPATH')) {
  die;
}
/**
 *
 * Options Class
 *
 * @since 1.0.0
 * @version 1.0.0
 *
 */
if (!class_exists('CSF_Options')) {
  class CSF_Options extends CSF_Abstract
  {

    // constans
    public $unique       = '';
    public $notice       = '';
    public $abstract     = 'options';
    public $sections     = array();
    public $options      = array();
    public $errors       = array();
    public $pre_tabs     = array();
    public $pre_fields   = array();
    public $pre_sections = array();
    public $args         = array(

      // framework title
      'framework_title'         => 'Codestar Framework <small>by Codestar</small>',
      'framework_class'         => '',

      // menu settings
      'menu_title'              => '',
      'menu_slug'               => '',
      'menu_type'               => 'menu',
      'menu_capability'         => 'manage_options',
      'menu_icon'               => null,
      'menu_position'           => null,
      'menu_hidden'             => false,
      'menu_parent'             => '',
      'sub_menu_title'          => '',

      // menu extras
      'show_bar_menu'           => true,
      'show_sub_menu'           => true,
      'show_in_network'         => true,
      'show_in_customizer'      => false,

      'show_search'             => true,
      'show_reset_all'          => true,
      'show_reset_section'      => true,
      'show_footer'             => true,
      'show_all_options'        => true,
      'show_form_warning'       => true,
      'sticky_header'           => true,
      'save_defaults'           => true,
      'ajax_save'               => true,
      'form_action'             => '',

      // admin bar menu settings
      'admin_bar_menu_icon'     => '',
      'admin_bar_menu_priority' => 50,

      // footer
      'footer_text'             => '',
      'footer_after'            => '',
      'footer_credit'           => '',

      // database model
      'database'                => '', // options, transient, theme_mod, network
      'transient_time'          => 0,

      // contextual help
      'contextual_help'         => array(),
      'contextual_help_sidebar' => '',

      // typography options
      'enqueue_webfont'         => true,
      'async_webfont'           => false,

      // others
      'output_css'              => true,

      // theme
      'nav'                     => 'normal',
      'theme'                   => 'dark',
      'class'                   => '',

      // external default values
      'defaults'                => array(),

    );

    // run framework construct
    public function __construct($key, $params = array())
    {

      $this->unique   = $key;
      $this->args     = apply_filters("csf_{$this->unique}_args", wp_parse_args($params['args'], $this->args), $this);
      $this->sections = apply_filters("csf_{$this->unique}_sections", $params['sections'], $this);

      // run only is admin panel options, avoid performance loss
      $this->pre_tabs     = $this->pre_tabs($this->sections);
      $this->pre_fields   = $this->pre_fields($this->sections);
      $this->pre_sections = $this->pre_sections($this->sections);

      $this->get_options();
      $this->set_options();
      $this->save_defaults();

      add_action('admin_menu', array($this, 'add_admin_menu'));
      add_action('admin_bar_menu', array($this, 'add_admin_bar_menu'), $this->args['admin_bar_menu_priority']);
      add_action('wp_ajax_csf_' . $this->unique . '_ajax_save', array($this, 'ajax_save'));

      if ($this->args['database'] === 'network' && !empty($this->args['show_in_network'])) {
        add_action('network_admin_menu', array($this, 'add_admin_menu'));
      }

      // wp enqeueu for typography and output css
      parent::__construct();
    }

    // instance
    public static function instance($key, $params = array())
    {
      return new self($key, $params);
    }

    public function pre_tabs($sections)
    {

      $result  = array();
      $parents = array();
      $count   = 100;

      foreach ($sections as $key => $section) {
        if (!empty($section['parent'])) {
          $section['priority'] = (isset($section['priority'])) ? $section['priority'] : $count;
          $parents[$section['parent']][] = $section;
          unset($sections[$key]);
        }
        $count++;
      }

      foreach ($sections as $key => $section) {
        $section['priority'] = (isset($section['priority'])) ? $section['priority'] : $count;
        if (!empty($section['id']) && !empty($parents[$section['id']])) {
          $section['subs'] = wp_list_sort($parents[$section['id']], array('priority' => 'ASC'), 'ASC', true);
        }
        $result[] = $section;
        $count++;
      }

      return wp_list_sort($result, array('priority' => 'ASC'), 'ASC', true);
    }

    public function pre_fields($sections)
    {

      $result  = array();

      foreach ($sections as $key => $section) {
        if (!empty($section['fields'])) {
          foreach ($section['fields'] as $field) {
            $result[] = $field;
          }
        }
      }

      return $result;
    }

    public function pre_sections($sections)
    {

      $result = array();

      foreach ($this->pre_tabs as $tab) {
        if (!empty($tab['subs'])) {
          foreach ($tab['subs'] as $sub) {
            $sub['ptitle'] = $tab['title'];
            $result[] = $sub;
          }
        }
        if (empty($tab['subs'])) {
          $result[] = $tab;
        }
      }

      return $result;
    }

    // add admin bar menu
    public function add_admin_bar_menu($wp_admin_bar)
    {

      if (is_network_admin() && ($this->args['database'] !== 'network' || $this->args['show_in_network'] !== true)) {
        return;
      }

      if (!empty($this->args['show_bar_menu']) && empty($this->args['menu_hidden'])) {

        global $submenu;

        $menu_slug = $this->args['menu_slug'];
        $menu_icon = (!empty($this->args['admin_bar_menu_icon'])) ? '<span class="csf-ab-icon ab-icon ' . esc_attr($this->args['admin_bar_menu_icon']) . '"></span>' : '';

        $wp_admin_bar->add_node(array(
          'id'    => $menu_slug,
          'title' => $menu_icon . esc_attr($this->args['menu_title']),
          'href'  => esc_url((is_network_admin()) ? network_admin_url('admin.php?page=' . $menu_slug) : admin_url('admin.php?page=' . $menu_slug)),
        ));

        if (!empty($submenu[$menu_slug])) {
          foreach ($submenu[$menu_slug] as $menu_key => $menu_value) {
            $wp_admin_bar->add_node(array(
              'parent' => $menu_slug,
              'id'     => $menu_slug . '-' . $menu_key,
              'title'  => $menu_value[0],
              'href'   => esc_url((is_network_admin()) ? network_admin_url('admin.php?page=' . $menu_value[2]) : admin_url('admin.php?page=' . $menu_value[2])),
            ));
          }
        }
      }
    }

    public function ajax_save()
    {

      $result = $this->set_options(true);

      if (!$result) {
        wp_send_json_error(array('error' => esc_html__('Error while saving the changes.', 'csf')));
      } else {
        wp_send_json_success(array('notice' => $this->notice, 'errors' => $this->errors));
      }
    }

    // get default value
    public function get_default($field)
    {

      $default = (isset($field['default'])) ? $field['default'] : '';
      $default = (isset($this->args['defaults'][$field['id']])) ? $this->args['defaults'][$field['id']] : $default;

      return $default;
    }

    // save defaults and set new fields value to main options
    public function save_defaults()
    {

      $tmp_options = $this->options;

      foreach ($this->pre_fields as $field) {
        if (!empty($field['id'])) {
          $this->options[$field['id']] = (isset($this->options[$field['id']])) ? $this->options[$field['id']] : $this->get_default($field);
        }
      }

      if ($this->args['save_defaults'] && empty($tmp_options)) {
        $this->save_options($this->options);
      }
    }

    // set options
    public function set_options($ajax = false)
    {

      // XSS ok.
      // No worries, This "POST" requests is sanitizing in the below foreach. see #L337 - #L341
      $response  = ($ajax && !empty($_POST['data'])) ? json_decode(wp_unslash(trim($_POST['data'])), true) : $_POST;

      // Set variables.
      $data      = array();
      $noncekey  = 'csf_options_nonce' . $this->unique;
      $nonce     = (!empty($response[$noncekey])) ? $response[$noncekey] : '';
      $options   = (!empty($response[$this->unique])) ? $response[$this->unique] : array();
      $transient = (!empty($response['csf_transient'])) ? $response['csf_transient'] : array();

      if (wp_verify_nonce($nonce, 'csf_options_nonce')) {

        $importing  = false;
        $section_id = (!empty($transient['section'])) ? $transient['section'] : '';

        if (!$ajax && !empty($response['csf_import_data'])) {

          // XSS ok.
          // No worries, This "POST" requests is sanitizing in the below foreach. see #L337 - #L341
          $import_data  = json_decode(wp_unslash(trim($response['csf_import_data'])), true);
          $options      = (is_array($import_data) && !empty($import_data)) ? $import_data : array();
          $importing    = true;
          $this->notice = esc_html__('Settings successfully imported.', 'csf');
        }

        if (!empty($transient['reset'])) {

          foreach ($this->pre_fields as $field) {
            if (!empty($field['id'])) {
              $data[$field['id']] = $this->get_default($field);
            }
          }

          $this->notice = esc_html__('Default settings restored.', 'csf');
        } else if (!empty($transient['reset_section']) && !empty($section_id)) {

          if (!empty($this->pre_sections[$section_id - 1]['fields'])) {

            foreach ($this->pre_sections[$section_id - 1]['fields'] as $field) {
              if (!empty($field['id'])) {
                $data[$field['id']] = $this->get_default($field);
              }
            }
          }

          $data = wp_parse_args($data, $this->options);

          $this->notice = esc_html__('Default settings restored.', 'csf');
        } else {

          // sanitize and validate
          foreach ($this->pre_fields as $field) {

            if (!empty($field['id'])) {

              $field_id    = $field['id'];
              $field_value = isset($options[$field_id]) ? $options[$field_id] : '';

              // Ajax and Importing doing wp_unslash already.
              if (!$ajax && !$importing) {
                $field_value = wp_unslash($field_value);
              }

              // Sanitize "post" request of field.
              if (!isset($field['sanitize'])) {

                if (is_array($field_value)) {

                  $data[$field_id] = wp_kses_post_deep($field_value);
                } else {

                  $data[$field_id] = wp_kses_post($field_value);
                }
              } else if (isset($field['sanitize']) && is_callable($field['sanitize'])) {

                $data[$field_id] = call_user_func($field['sanitize'], $field_value);
              } else {

                $data[$field_id] = $field_value;
              }

              // Validate "post" request of field.
              if (isset($field['validate']) && is_callable($field['validate'])) {

                $has_validated = call_user_func($field['validate'], $field_value);

                if (!empty($has_validated)) {

                  $data[$field_id] = (isset($this->options[$field_id])) ? $this->options[$field_id] : '';
                  $this->errors[$field_id] = $has_validated;
                }
              }
            }
          }
        }

        $data = apply_filters("csf_{$this->unique}_save", $data, $this);

        do_action("csf_{$this->unique}_save_before", $data, $this);

        $this->options = $data;

        $this->save_options($data);

        do_action("csf_{$this->unique}_save_after", $data, $this);

        if (empty($this->notice)) {
          $this->notice = esc_html__('Settings saved.', 'csf');
        }

        return true;
      }

      return false;
    }

    // save options database
    public function save_options($data)
    {

      if ($this->args['database'] === 'transient') {
        set_transient($this->unique, $data, $this->args['transient_time']);
      } else if ($this->args['database'] === 'theme_mod') {
        set_theme_mod($this->unique, $data);
      } else if ($this->args['database'] === 'network') {
        update_site_option($this->unique, $data);
      } else {
        update_option($this->unique, $data);
      }

      do_action("csf_{$this->unique}_saved", $data, $this);
    }

    // get options from database
    public function get_options()
    {

      if ($this->args['database'] === 'transient') {
        $this->options = get_transient($this->unique);
      } else if ($this->args['database'] === 'theme_mod') {
        $this->options = get_theme_mod($this->unique);
      } else if ($this->args['database'] === 'network') {
        $this->options = get_site_option($this->unique);
      } else {
        $this->options = get_option($this->unique);
      }

      if (empty($this->options)) {
        $this->options = array();
      }

      return $this->options;
    }

    // admin menu
    public function add_admin_menu()
    {

      extract($this->args);

      if ($menu_type === 'submenu') {

        $menu_page = call_user_func('add_submenu_page', $menu_parent, esc_attr($menu_title), esc_attr($menu_title), $menu_capability, $menu_slug, array($this, 'add_options_html'));
      } else {

        $menu_page = call_user_func('add_menu_page', esc_attr($menu_title), esc_attr($menu_title), $menu_capability, $menu_slug, array($this, 'add_options_html'), $menu_icon, $menu_position);

        if (!empty($sub_menu_title)) {
          call_user_func('add_submenu_page', $menu_slug, esc_attr($sub_menu_title), esc_attr($sub_menu_title), $menu_capability, $menu_slug, array($this, 'add_options_html'));
        }

        if (!empty($this->args['show_sub_menu']) && count($this->pre_tabs) > 1) {

          // create submenus
          foreach ($this->pre_tabs as $section) {
            call_user_func('add_submenu_page', $menu_slug, esc_attr($section['title']),  esc_attr($section['title']), $menu_capability, $menu_slug . '#tab=' . sanitize_title($section['title']), '__return_null');
          }

          remove_submenu_page($menu_slug, $menu_slug);
        }

        if (!empty($menu_hidden)) {
          remove_menu_page($menu_slug);
        }
      }

      add_action('load-' . $menu_page, array($this, 'add_page_on_load'));
    }

    public function add_page_on_load()
    {

      if (!empty($this->args['contextual_help'])) {

        $screen = get_current_screen();

        foreach ($this->args['contextual_help'] as $tab) {
          $screen->add_help_tab($tab);
        }

        if (!empty($this->args['contextual_help_sidebar'])) {
          $screen->set_help_sidebar($this->args['contextual_help_sidebar']);
        }
      }

      add_filter('admin_footer_text', array($this, 'add_admin_footer_text'));
    }

    public function add_admin_footer_text()
    {
      $default = 'Thank you for creating with <a href="http://codestarframework.com/" target="_blank">Codestar Framework</a>';
      echo (!empty($this->args['footer_credit'])) ? $this->args['footer_credit'] : $default;
    }

    public function error_check($sections, $err = '')
    {

      if (!$this->args['ajax_save']) {

        if (!empty($sections['fields'])) {
          foreach ($sections['fields'] as $field) {
            if (!empty($field['id'])) {
              if (array_key_exists($field['id'], $this->errors)) {
                $err = '<span class="csf-label-error">!</span>';
              }
            }
          }
        }

        if (!empty($sections['subs'])) {
          foreach ($sections['subs'] as $sub) {
            $err = $this->error_check($sub, $err);
          }
        }

        if (!empty($sections['id']) && array_key_exists($sections['id'], $this->errors)) {
          $err = $this->errors[$sections['id']];
        }
      }

      return $err;
    }

    // option page html output
    public function add_options_html()
    {

      $has_nav       = (count($this->pre_tabs) > 1) ? true : false;
      $show_all      = (!$has_nav) ? ' csf-show-all' : '';
      $ajax_class    = ($this->args['ajax_save']) ? ' csf-save-ajax' : '';
      $sticky_class  = ($this->args['sticky_header']) ? ' csf-sticky-header' : '';
      $wrapper_class = ($this->args['framework_class']) ? ' ' . $this->args['framework_class'] : '';
      $theme         = ($this->args['theme']) ? ' csf-theme-' . $this->args['theme'] : '';
      $class         = ($this->args['class']) ? ' ' . $this->args['class'] : '';
      $nav_type      = ($this->args['nav'] === 'inline') ? 'inline' : 'normal';
      $form_action   = ($this->args['form_action']) ? $this->args['form_action'] : '';

      do_action('csf_options_before');

      echo '<div class="csf csf-options' . esc_attr($theme . $class . $wrapper_class) . '" data-slug="' . esc_attr($this->args['menu_slug']) . '" data-unique="' . esc_attr($this->unique) . '">';

      echo '<div class="csf-container">';

      echo '<form method="post" action="' . esc_attr($form_action) . '" enctype="multipart/form-data" id="csf-form" autocomplete="off" novalidate="novalidate">';

      echo '<input type="hidden" class="csf-section-id" name="csf_transient[section]" value="1">';

      wp_nonce_field('csf_options_nonce', 'csf_options_nonce' . $this->unique);

      echo '<div class="csf-header' . esc_attr($sticky_class) . '">';
      echo '<div class="csf-header-inner">';

      echo '<div class="csf-header-left">';
      echo '<h1>' . $this->args['framework_title'] . '</h1>';
      echo '</div>';

      echo '<div class="csf-header-right">';

      $notice_class = (!empty($this->notice)) ? 'csf-form-show' : '';
      $notice_text  = (!empty($this->notice)) ? $this->notice : '';

      echo '<div class="csf-form-result csf-form-success ' . esc_attr($notice_class) . '">' . $notice_text . '</div>';

      echo ($this->args['show_form_warning']) ? '<div class="csf-form-result csf-form-warning">' . esc_html__('You have unsaved changes, save your changes!', 'csf') . '</div>' : '';

      echo ($has_nav && $this->args['show_all_options']) ? '<div class="csf-expand-all" title="' . esc_html__('show all settings', 'csf') . '"><i class="fas fa-outdent"></i></div>' : '';

      echo ($this->args['show_search']) ? '<div class="csf-search"><input type="text" name="csf-search" placeholder="' . esc_html__('Search...', 'csf') . '" autocomplete="off" /></div>' : '';

      echo '<div class="csf-buttons">';
      echo '<input type="submit" name="' . esc_attr($this->unique) . '[_nonce][save]" class="button button-primary csf-top-save csf-save' . esc_attr($ajax_class) . '" value="' . esc_html__('Save', 'csf') . '" data-save="' . esc_html__('Saving...', 'csf') . '">';
      echo ($this->args['show_reset_section']) ? '<input type="submit" name="csf_transient[reset_section]" class="button button-secondary csf-reset-section csf-confirm" value="' . esc_html__('Reset Section', 'csf') . '" data-confirm="' . esc_html__('Are you sure to reset this section options?', 'csf') . '">' : '';
      echo ($this->args['show_reset_all']) ? '<input type="submit" name="csf_transient[reset]" class="button csf-warning-primary csf-reset-all csf-confirm" value="' . (($this->args['show_reset_section']) ? esc_html__('Reset All', 'csf') : esc_html__('Reset', 'csf')) . '" data-confirm="' . esc_html__('Are you sure you want to reset all settings to default values?', 'csf') . '">' : '';
      echo '</div>';

      echo '</div>';

      echo '<div class="clear"></div>';
      echo '</div>';
      echo '</div>';

      echo '<div class="csf-wrapper' . esc_attr($show_all) . '">';

      if ($has_nav) {

        echo '<div class="csf-nav csf-nav-' . esc_attr($nav_type) . ' csf-nav-options">';

        echo '<ul>';

        foreach ($this->pre_tabs as $tab) {

          $tab_id    = sanitize_title($tab['title']);
          $tab_error = $this->error_check($tab);
          $tab_icon  = (!empty($tab['icon'])) ? '<i class="csf-tab-icon ' . esc_attr($tab['icon']) . '"></i>' : '';

          if (!empty($tab['subs'])) {

            echo '<li class="csf-tab-item">';

            echo '<a href="#tab=' . esc_attr($tab_id) . '" data-tab-id="' . esc_attr($tab_id) . '" class="csf-arrow">' . $tab_icon . $tab['title'] . $tab_error . '</a>';

            echo '<ul>';

            foreach ($tab['subs'] as $sub) {

              $sub_id    = $tab_id . '/' . sanitize_title($sub['title']);
              $sub_error = $this->error_check($sub);
              $sub_icon  = (!empty($sub['icon'])) ? '<i class="csf-tab-icon ' . esc_attr($sub['icon']) . '"></i>' : '';

              echo '<li><a href="#tab=' . esc_attr($sub_id) . '" data-tab-id="' . esc_attr($sub_id) . '">' . $sub_icon . $sub['title'] . $sub_error . '</a></li>';
            }

            echo '</ul>';

            echo '</li>';
          } else {

            echo '<li class="csf-tab-item"><a href="#tab=' . esc_attr($tab_id) . '" data-tab-id="' . esc_attr($tab_id) . '">' . $tab_icon . $tab['title'] . $tab_error . '</a></li>';
          }
        }

        echo '</ul>';

        echo '</div>';
      }

      echo '<div class="csf-content">';

      echo '<div class="csf-sections">';

      foreach ($this->pre_sections as $section) {

        $section_onload = (!$has_nav) ? ' csf-onload' : '';
        $section_class  = (!empty($section['class'])) ? ' ' . $section['class'] : '';
        $section_icon   = (!empty($section['icon'])) ? '<i class="csf-section-icon ' . esc_attr($section['icon']) . '"></i>' : '';
        $section_title  = (!empty($section['title'])) ? $section['title'] : '';
        $section_parent = (!empty($section['ptitle'])) ? sanitize_title($section['ptitle']) . '/' : '';
        $section_slug   = (!empty($section['title'])) ? sanitize_title($section_title) : '';

        echo '<div class="csf-section hidden' . esc_attr($section_onload . $section_class) . '" data-section-id="' . esc_attr($section_parent . $section_slug) . '">';
        echo ($has_nav) ? '<div class="csf-section-title"><h3>' . $section_icon . $section_title . '</h3></div>' : '';
        echo (!empty($section['description'])) ? '<div class="csf-field csf-section-description">' . $section['description'] . '</div>' : '';

        if (!empty($section['fields'])) {

          foreach ($section['fields'] as $field) {

            $is_field_error = $this->error_check($field);

            if (!empty($is_field_error)) {
              $field['_error'] = $is_field_error;
            }

            if (!empty($field['id'])) {
              $field['default'] = $this->get_default($field);
            }

            $value = (!empty($field['id']) && isset($this->options[$field['id']])) ? $this->options[$field['id']] : '';

            CSF::field($field, $value, $this->unique, 'options');
          }
        } else {

          echo '<div class="csf-no-option">' . esc_html__('No data available.', 'csf') . '</div>';
        }

        echo '</div>';
      }

      echo '</div>';

      echo '<div class="clear"></div>';

      echo '</div>';

      echo ($has_nav && $nav_type === 'normal') ? '<div class="csf-nav-background"></div>' : '';

      echo '</div>';

      if (!empty($this->args['show_footer'])) {

        echo '<div class="csf-footer">';

        echo '<div class="csf-buttons">';
        echo '<input type="submit" name="csf_transient[save]" class="button button-primary csf-save' . esc_attr($ajax_class) . '" value="' . esc_html__('Save', 'csf') . '" data-save="' . esc_html__('Saving...', 'csf') . '">';
        echo ($this->args['show_reset_section']) ? '<input type="submit" name="csf_transient[reset_section]" class="button button-secondary csf-reset-section csf-confirm" value="' . esc_html__('Reset Section', 'csf') . '" data-confirm="' . esc_html__('Are you sure to reset this section options?', 'csf') . '">' : '';
        echo ($this->args['show_reset_all']) ? '<input type="submit" name="csf_transient[reset]" class="button csf-warning-primary csf-reset-all csf-confirm" value="' . (($this->args['show_reset_section']) ? esc_html__('Reset All', 'csf') : esc_html__('Reset', 'csf')) . '" data-confirm="' . esc_html__('Are you sure you want to reset all settings to default values?', 'csf') . '">' : '';
        echo '</div>';

        echo (!empty($this->args['footer_text'])) ? '<div class="csf-copyright">' . $this->args['footer_text'] . '</div>' : '';

        echo '<div class="clear"></div>';
        echo '</div>';
      }

      echo '</form>';

      echo '</div>';

      echo '<div class="clear"></div>';

      echo (!empty($this->args['footer_after'])) ? $this->args['footer_after'] : '';

      echo '</div>';

      do_action('csf_options_after');
    }
  }
}
